\newproblem{lay:2_3_17}{
  % Problem identification
	\begin{large}
	  \hspace{\fill}\newline
    \textbf{Lay, 2.3.17}
	\end{large}
	\\
  \ifthenelse{\boolean{identifyAuthor}}{\textit{Carlos Oscar Sorzano, Aug. 31st, 2013} \\}{}

  % Problem statement
  Can a square matrix with two identical columns be invertible? Why or why not?
}{
  % Solution
	It cannot be invertible because the two columns are not linearly independent, and by the Invertible Matrix Theorem, if a matrix is invertible, then its columns are linearly
	independent.
}
\useproblem{lay:2_3_17}
\ifthenelse{\boolean{eachProblemInOnePage}}{\newpage}{}
